Willow® Wearable Breast Pump

Generation 2.0
Rated 4.5 out of 5
149 Reviews

Generation 2.0

Willow changed the world of pumping in January 2018 with the first-ever, in-bra wearable pump. Generation 2.0 is even better, with a clear flange to help you align and get pumping faster.

Meet the all-in-one breast pump that fits in your bra and goes where you go. Our patented, no-spill technology lets you pump smarter and fully hands-free.

Flange Size Guide

Sizing Guide

Sizing Steps

  1. Stimulate your nipple so it’s erect.

  2. Hold a dime, nickel and quarter in front of your nipples to compare the diameter of the base of your nipples (not the areola) to each coin.

  3. Determine your flange size using the chart below.

    Size Guide

    If your nipple is:

    Smaller than a dime 21mm
    (Not Offered)
    Larger than a dime but smaller than a nickel 24mm
    Larger than a nickel but smaller than a quarter 27mm
    Ships Separately
    Larger than a quarter 30mm
    (Not Offered)

Free Shipping on all Pumps.
FSA/HSA reimbursement eligible.
Need help deciding?
  • Everything works inside the Pump and inside your bra, with no external tubes, cords, or dangling bottles to hold you back.
  • Milk flows into the spill-proof Milk Bag inside the Pump.
  • Smart, proprietary technology responds to your body and maintains suction similar to a baby, enabling true mobility without spilling a drop.
  • Lie down, bend over, play with baby, take a conference call… pump wherever the day takes you!
  • The only wearable pump that is spill-proof in any position
  • Quiet for discreet pumping
  • Seven levels of suction are comparable to most traditional double electric and hospital grade pumps
  • Connects to the Willow App, for easy volume tracking, session history, and personalized pumping tips
  • Compatible with iOS (iPhone 5 and newer) and Android (supported models)
  • Only two parts to clean. Dishwasher safe
  • BPA free (all parts that come in contact with breastmilk)
  • Rechargeable battery lasts up to 5 pumping sessions to get you through the day
  • One year warranty from first use
  • 2 Willow Pumps
  • 2x 24mm Flanges (27mm Flanges Ship Separately)
  • 2 Flextubes™
  • 24 4 oz. Milk Bags
  • Charger
  • 2 Cleaning Brushes
  • 2 Carrying Bags
Do you offer financing?
Yes! We partner with Affirm to offer payment plans for the Willow Wearable Breast Pump. Learn more
Can I use my HSA/FSA?
Yes you can. Simply pay for your breast pump, milk bags, and accessories using your FSA/HSA debit card at checkout, or pay with another credit card and submit your receipt to your plan administrator for reimbursement.
Is Willow covered by insurance?
Some women are able to obtain full or partial reimbursement for their Willow Pump through insurance. We recommend you contact your insurance provider to see if they will cover some or all of the cost of the pump.
Does Willow work with larger breast sizes?
Yes. Willow was designed to work with larger breast sizes including G and H bra cups. See our Sizing Guide for fit.
Do I need a special bra for Willow?
We recommend wearing Willow with a full-coverage nursing bra that’s stretchy and has a flap. Avoid underwire and padded bras.
Do you offer 21 or 30 mm Flanges?
Not yet, but we want Willow to be accessible to as many women as possible. Our team is exploring offering more sizes in the future. Unsure of your size? Our Sizing Guide can help.
Can you ship Willow internationally?
Not at this time, but our goal is to get Willow into the hands of women around the world—so it’s something we hope to offer in the future.

Awards & Accolades

average rating 4.5 out of 5
Based on 149 reviews
  • 5 Stars
    94 Reviews
  • 4 Stars
    40 Reviews
  • 3 Stars
    9 Reviews
  • 2 Stars
    3 Reviews
  • 1 Star
    3 Reviews
91% of reviewers would recommend this product to a friend
149 Reviews
Rated 5 out of 5
Review posted

Game Changer!

I am a flight nurse and nurse practitioner so I don't have any extra minutes to spend pumping. After not being able to reach my breastfeeding goals with my first son I was determined to find a way to reach 12 months if possible. When I returned to work I struggled at first to use a traditional pump, due to the constant changes in schedule I was not able to pump as frequently as I wanted and I saw it reflected in my supply. At that time one of my coworkers had purchased the willow and I knew it would be amazing! I did have difficulty getting the same output and through coaching calls I was able to match output and optimize the pump. I do wish the flanges came in more sizes, that the bags were reusable and that the clear flanges were available for the 1.0. I love the willow, its worth the money. Its not a perfect device however is amazing and something that has revolutionized breast feeding. Every woman should have access to a pump like this! Hopefully in the future when they upgrade a pump they will either offer the new upgrades to old pumps or offer a large discount for a current willow user to upgrade.

Was this helpful?
Rated 5 out of 5
Review posted

In love

I just love my Willow. It gives me more time with my kids/family. I never have to be late or miss anymore pumps.

Was this helpful?
Rated 5 out of 5
Review posted

Teacher Sanity saver!

I am a teacher and my son was born at the end of the school year in May. All summer I’ve been EXTREMELY anxious about going back to work for many reasons... one of them being that I only have a 20 min lunch and frequent meetings on my 50 minute planning etc. For my personal job performance and sanity, I could not be tethered to a cord and outlet for 15-20 minutes each pump session.

The willow is WORTH EVERY PENNY AND THEN SOME! This pump made my transition leaving baby and going back to work super simple and stress free.

Also note that the customer service and tech support are absolutely amazing!

Was this helpful?
Rated 5 out of 5
Review posted

Life changing!

This pump is worth its weight in gold! There is nothing like being able to use your pumping time wisely, like pumping during my commute, doing the dishes, hold my baby, or even being able to sit next to my husband on the couch! Being stuck to the wall, holding the flanges to me, and having to pour milk from the collection bottle to the bag is something I will never miss. Thank you Willow!

Was this helpful?
Rated 5 out of 5
Review posted


I love the willow. It allows me to be a mommy to my 3 children while I'm pumping. And a great employee at

Work. It is a bit pricey but worth it.

Was this helpful?